Lumber elevator



M. JACKSON LUMBER ELEVATOR Original Filed Feb. 9, 1920 4 Sheets-Sheet 1 Maxqy Jcksbz? INVENTOR ATTORNEY Oct. 23 1923. 1,471,468

M. JACKSON LUMBER ELEVATOR Original Filed Feb. 9. 1920 4 Sheets-Sheet 2 Ma gy W v WITNESW ATTORNEY ac7zfson- M N Get. 23, 1923. I 4 1,471,468

M. JACKSON LUMBER ELEVATOR Original Filed Feb. 9, 1920 4 Sheets-Sheet 5 M v a? A'ITORNEY I I I I I J 1 E E o L- L o E H 4 L Oct. 23 1923. 7 1,471,468

I M. JACKSON LUMBER ELEVAiOR Original Filed Feb. 9, 1920 4 Sheets-Sheet 4 j az'qy pine/K902 INVENTOR M N mym- ATI'ORNEY WITNESS- I truck.

Patented Oct. 23, 1923.

UMTEDSTATES- PATENT i innate car es;

nAxnY JAoKsoN, or roa'rmnn, oaneon, ASSIGNOR TO THE JACKSON COMPANY, on

EMMETT, 1 IDAHO.

LUMBER ELEVATOR.

Application filed February 9, 1920, Serial No. 357,296. Renewed .Tun'e 26 1923.

To alZwiz-om itmay concern:

Be it known that I, MAXEY JACKSON, a citizen of the United States, residing at Portland, in thecounty of- Multnomah and State of Oregon, haveinventednew and usefullmprovements in Lumber Elevators, of which the following is a specification.

This invention relates to machines for stacking or piling lumber andhas for an object the provision of a machine which may be easily transported fromplace to place, so as to be located in a convenient position for use. I 7

Another object .of the invention is the provision of a lumber stacking machine, inwhichthe lumber may be placed upon a table or support and automatically lifted therefrom and elevated to the desired height, or the operation of the machine'reversed so asito lower the lumber when desired.

Another object is the'j provision of a stacker, which is mounted upon a wheel supported truck,'movable along the track and which is capable of movement in a direction transversely 'oflthe track, so as to ermit of the passage of cars thereover. further object of the invention is the provision of a power operated stackerhaving means for automatically stopping this operation should the lumber not" be removed from the carrier arms.

Other objects and advantages of the invention will appearlas the following description is read in connection with the accompanying drawings. In the drawings: v

Figure 1 is a side elevationof the lum-1 ber'stacker constructed in accordance with the "present invention. Fig'ur'e 2 is a plan view of the same. Figure 3is an end view. Figure 4 is-a vertical section on the line 4:4 of Figure 3. V v

7 Figure 5 :is' a detailed view of one of the lifting arms of the carrier.

Figure" 6 is a skeleton view of the truck. f

:Figure main is a side view of the V auxiliary Referring 'to' the drawing'sf 'in detail, wherein like charactersof reference denote corresponding parts throughout the several views. p

' In illustrating the invention, there" is shown a stacker-which is maimed "upon a platform 10, the said platform being ca'rried by a frame 11 which is mounted upon Wheels 12, the latter a being movable 'over a track 13.

The platform -10. has rising therefrom; preferably near' one side. edge, standards Two of these standards are shown, but. it is of course obvious that their num." bermay be 'increasedgas desired; These standards are preferably formed of angle iron and are braced longitudinally of theplatform by cross bracesg15 and trans verselyfof the platformby'inclined braces 16,1 so that they are rigidly. held in positionj. Each of the standards 14 comprise vertically disposed outer members 16 which-are arranged in pairs and spaced apart as shown,while positioned inwardly and spaced from the members 16 is. a member 17, which, together with themembers 16 provide a housing or guide'foran endless chain 18-. This chain is composed I of links .19, which are pivoted together as shown at,20, certain of said links being extended to provide laterallyiprojecting carrier arms 21. These ,arms are 'movable vertically of *the standards l twithin the 1 space provided between themembers 16 so. as'toprovide a'guide'forthe carrier arms; and their: outer'nends are supported by means of? bars 22. One end of these bars are connected to one of the links 19 by, means of a pivot pin 23, while their op positeends carry a pin 24, which is mow able in a slot provided in thGjOUtGIeIiClDf V the arm 21. This provides forthe proper Play between i the connected ends of "the arm :21 and bars 22 When the chain is passing over its supporting wheels. These wheels are in the form of sprocket wheels 2 6 and '27frespectively {located at theltop and bottom of the standard 14:. 1

:The lower wheels 27 are mounted upon the standard .ends'iof a longitudinally disposed shaft 28, which is mounted .in suitable bearings beneath? the platform 7 ,10. This-shaft has'secured thereon intermediate its'ends a sprocket wheel'29, which is driven from a pinion 30fmountedupon thef shaft' of a motor 32, the latter being suitably sup--v ported beneath the platform 10. 'Anyotlrier,

suitablemotive' power may be substituted forf hi's motor. T1 Any other suitable "gearing".may be substituted for; connecting? h shaft 28-With' themotor 32, suchas awn.- l

ill)

ranged transversely of the rail sections 36 are normally in contact the. shaft with different speeds and suitable reversing mechanism. The gear 29 rotatable meependently of the shait may be loc ted thereto by means of a :lutch 31. controlled by a lever 31, the latter being held in adjuster position by means of a dog 33.

The supporting wheels 12 are mounted upon a' truck 34': and'the side bars of this truck are extended beyond the ends of the frame 10 so as to provide means for securing at each end thereof a transversely arranged'truck 35. This last mentioned truck comprises a substantially U-shaped bar 36, which is capable-of vertical movement 1ndecarries t angles pendcntly of i the truck 34: and wheels 34' which are disposed at rrgl to the wheels with wheels jcurnaled in the Ll-shaped bars 36 and act to support the elevator when the rail sections are in contact" witi the track 13. For this purposefthere is POSitioned transversely of each end of the truck a. rock shaft 38, which has secured thereto arms the latter being pivotally connected to links Ocarried by the bar 36. operating the lever ll, which is con nectet. to the shaft 3S,the trucks 35 may be lowered and the truck 34iraised as shown in Figure i. The lever 41 is held in adjusted position by a toothed se ment ll B 1 lower .l .1 1

ing the rail sections 36 upon the track 13 and. raising the truck 34- the entire device may be moved to one side of the track upon the temporary rails'R shown in Figure 3, so as to permit of the passage'of other cars over the track "13'.

I The lumber to be stacked may be un loaded from carsat. each end of the elevae tor and for this purpose, the main truck 3% carries a'table 3""which extends longitudinally alone one edge of the track and is provided with openinn s i l for thepassage of the arms 21 of the chain 18, the lumber being" lifted by, these arms "from the table and elevated to the desired height, whereupon it is transferred to'the pile. In the event of failure to remove the lum er from the arms 21 after they have reached a predetermined height, tliejoperation of the hoisting: mechanism will automatically cease; To provide for this, there is located in the path of the upwardly moving. lumber bet-ween the arms, an outwardly extending arm 44*, the said arm being located upon the upper extremity of the rod 4-5, Which is mounted for longitudinal movement in a bearing l6. The lower end of the arm a l is ,pivotally connected to one end of a bell crank lever l7, pivoted to a bracket 48 upon the platform l0. The other arm of this bell crank is connected by a rod a9 to the dog); of the operating lever 31*. When the upwardly moving board contacts with the arm a l, the rod to will be lifted and through the medium of therod 49, will move the lever 31 to disengage the clutch 31 of the gear29.

is of course obvious that theelevator hoisting mechanism may be used upon tri s other than those travelling over a tr; r, so to, permit of its use in piling lumber in yards or other: places not equipped with railway track.

The invention is susceptibleof various changes in its form, proportions and minor details of construction, and the. right is herein reserved to make such changes as properly fall within the scope of the appended claims.

described the invention what is claimed is':

1. In lumber stacker, a wheel-supported truck andpla forin, lumbermoving means mounted on sa d platform, and transverselyarranged trucks pivotally mounted on the said 1. st-named truck, said trucks being independently pi oted and vertically-movable independently of each other.

ln a. lumber stacker, a wheel-supported ck and platform, lumber-moving means on said platform, transverselytrucks pivotally mounted on the said nrst-narned truck, said. trucks being inandently pivoted and vertically-movable in. endently of each other, and means for moving them simultaneously in opposite directions. V

3. In lumber stacker, a wheel-suppor"ed truck and platform, lumber elevating means supported by said truck and platform, and an unloading table carried by said truck and supported above the frame'thereof'parallel. therewith. 1

4 In a lumber stacker, a Wheel-supported truck and platform, lumber elevating means supported'by. said truck and platform, and an unloading: table carried by said truck and supported above the frame thereof parallel therewith and having openings for the passa age of the arms-of the elevatingmeans.

5. In a lumber stacker, a wheel-supported truck and platform, lumber elevating means supported by said truck and platform, a table carriedby said truck parallel therewith, and means automatically actuated by direct contact of the upwardly-moving lumber for automatically stopping said elevating means in case theiumber is not removed after predetermined height is reached.

- 6. ln a lumber stacker, a wheel-supported truck and platform, lumber elevating means supported by said truck and platform, a table carried by said truck parallel therewith, V

a transverse truck movable vertically with the main truck in opposite direction thereto,

1 means for automatically stopping said eletor, a controlling clutch therfor, and pivoted means interposed between said member and clutch for actuating the latter.

8. In a lumber stacker, a wheel-supported platform and truck, lumber elevating means carried thereby, a member movably disposed in the path of lumber unremoved from the said elevating means, a motor, a controlling clutch therefor, pivoted means interposed between said member and clutch for actuating the latter, and a supplemental truck arranged transversely of the firstnamed truck and vertically movable with relation thereto. i

9. In a lumber stacker, a wheel-supported platform and truck, lumber elevating means carried thereby, a member movably disposed in the path of lumber unremoved from the said elevating means, a. motor, a controllin clutch therefor, pivoted means interpose between said member and clutch for actuating the latter, a supplemental truck arranged transversely of the first-named truck and vertically movable with relation there to, andmeans on the first-named truck for lowering the transverse truck and raising the first-named truck. I

10. In a lumber stacker, a wheel-supported platform and truck, lumber elevating means carried thereby, a member movably i disposed in the path of lumber unremoved from the said elevating means, a 'motor, a

controlling clutch therefor, pivotedmeans interposed between said'member and clutch for actuating the latter, a supplemental truck arranged transversely of the first.

named truck and vertically movable withrelation thereto, and rail clutching members carired by the transverse'truck.

- 11. In a lumber stacker, awheel-support ed platform and truck, lumber elevating means carried thereby, a member movably disposed in the path of lumber unremoved .7 from the said elevating means, a motor, a.

controlling clutch therefor, pivoted, means interposed between said member and clutch for actuating -.the latter, a supplemental truck arranged';transversely of .the'. first named truck and vertically movable with relation thereto, and meanson the first-named j truck for lowerln'g the transverse truck and ra sing the first-named truck, said transverse truck embodying inverted U-shaped bars guided on means on the main truckand carrying said rail clutching members.

In testimony whereof I affix my signature. r z

- MAXEY JACKSON. 

